package cn.tedu.web.servlet2;

import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.LineCaptcha;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@WebServlet(urlPatterns = "/swwcode")
public class CodeServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        HttpSession session = req.getSession();
        LineCaptcha captcha = CaptchaUtil.createLineCaptcha(200, 50);

        String code = captcha.getCode();
        session.setAttribute("CCC",code);

        //将验证码图片响应输出流给客户端
        captcha.write(resp.getOutputStream());

    }
}
